获取store的状态

myStore.js

import storact from 'storact'

const {
  useDispatch,
  useStoreState,
  Provider,
} = storact({
  initialState, 
  middlewares,
  effects,
  namespace,
})

export { useDispatch, useStoreState, Provider }

useStoreState提供在组件中访问store状态的方法，只有一个参数path，用来指定“访问路径“，例如

{
  members: [{
    name: 'Yu',
    age: '22',
  }, {
    name: 'Han',
    age: '20',
  }]
}

// useStoreState(['members', 0, 'name']) => 'Yu'
// useStoreState(['members', 1]) => { name: 'Han', age: '20' }
// useStoreState(['members']) => [{name: 'Yu', age: '22'}, {name: 'Han', age: '20'}]
// useStoreState([]) 或者 useStoreState() => 直接返回整个状态

这里需要注意，即使是在同一个组件内，分别调用useStoreState返回的状态是不关联的，也就是说useStoreState返回的是一个“当前状态的快照“，这样的话也同时保证了store的不可变性，例如：

const members = useStoreState(['members'])
const member1 = useStoreState(['members', 1])

members[1].name = 'Other'
console.log(members[1].name) // 'Other'
console.log(member1.name) // 'Han'

具体的使用方式如下

App.js

import { useDispatch, useStoreState, Provider } from './myStore'

function App() {
    const members = useStoreState(['members'])
    return (
        <div>
            {members.map(({ name, age }) => <p>{name}: {age}</p>)}
        </div>
    )
}